Locking flange nut

Abstract

The utility model discloses a prevent loosening flange nut, including first nut, second nut, third nut, first boss, second boss, connecting rod, first through -hole, second through -hole, plug stick, flow glue tank, the first nut bottom is fixed with a flange, the inside of first nut is equipped with first thread hole, and first thread hole is from top to bottom and is through first nut, the top of first nut is equipped with second nut, and the inside of second nut is equipped with second thread hole, and second thread hole is from top to bottom and is through second nut, the outside of third nut is equipped with with second thread hole matched outer thread, and third nut is screwed in second thread hole, and the inside of third nut is equipped with third thread hole, the utility model discloses through setting up first thread hole and second thread hole who are opposite in spiral direction respectively on first nut and second nut, and connecting rod connects first nut and second nut, so that first nut cannot loosen, guarantee the reliability of nut.

Description

Technical Field

[0001] This utility model relates to the technical field of fasteners, and in particular to the technical field of flange nuts. Background Technology

[0002] Flange nuts and regular hexagonal nuts have basically the same dimensions and thread specifications. However, unlike regular hexagonal nuts, flange nuts have a washer and nut integrated, and have anti-slip teeth on the bottom. This increases the surface area contact between the nut and the workpiece, making it more secure and with greater tensile strength than a combination of a regular nut and washer.

[0003] For example, Chinese utility model patent CN212106567U discloses a flange nut, which includes a nut body, a connecting part and a flange connected in sequence, and also has a sealing groove, a sealing ring, a boss, an oil reservoir groove, an oil injection groove, a fastening bolt and a sealing ring. The specific effects mentioned in the embodiment are: the fastening bolt can block the oil injection groove, and the bolt can be fixed by contacting the bolt with the end of the fastening bolt, thus preventing the nut body and the bolt from loosening. The problem with this technical solution is that the flange nut is connected to the bolt by threads during use, which is prone to loosening. The fastening bolt is also connected to the oil injection groove by threads. The vibration generated by the operation of the equipment with the flange nut installed will cause the fastening bolt to loosen, and then the flange nut will loosen. Therefore, it is impossible to keep the flange nut from loosening for a long time. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art by proposing an anti-loosening flange nut, which makes the flange nut less likely to loosen during use.

[0005] To achieve the above objectives, this utility model proposes an anti-loosening flange nut, comprising a first nut, a second nut, a third nut, a first protrusion, a second protrusion, a connecting rod, a first through hole, a second through hole, an insert rod, and a glue flow groove. A flange is fixed to the bottom of the first nut. The first nut has a first threaded hole inside, which penetrates the first nut from top to bottom. A second nut is located above the first nut, and the second nut has a second threaded hole inside, which penetrates the second nut from top to bottom. The third nut has an external thread that mates with the second threaded hole, and is screwed into the second threaded hole. The first nut and the second nut... A first elastic washer is sandwiched between the first nut and the third nut, and a second elastic washer is sandwiched between the first nut and the third nut. The first threaded hole and the third threaded hole have the same thread, and the threads of the first threaded hole and the second threaded hole have opposite helical directions. The second nut has a first through hole on its side wall, and the third nut has a second through hole on its side wall. The first through hole and the second through hole are located on the same straight line. The insertion rod passes through the first through hole and is inserted into the middle of the second through hole. The inner wall of the third threaded hole has a glue flow groove, which is connected to the second through hole. The first nut has a first protrusion on its outer wall, and the second nut has several second protrusions on its outer wall. The connecting rod connects the first protrusion to one of the second protrusions on the second nut.

[0006] Preferably, the first through hole is inclined downward, and the opening end of the first through hole on the outer wall of the second nut is higher than the opening end of the first through hole on the inner wall of the second nut.

[0007] Preferably, one end of the insertion rod is provided with a limiting head, which is located outside the second nut and contacts the outer wall of the second nut. The first through hole does not allow the limiting head to be inserted.

[0008] Preferably, the glue flow channel is vertically arranged, with its top end connected to the second through hole, and the inner wall of the third threaded hole is provided with a plurality of glue guide ring grooves, which are connected to the glue flow channel.

[0009] Preferably, the connecting rod consists of a first rod body and a second rod body. The top end of the first rod body is provided with a guide groove that is adapted to the second rod body. The second rod body is inserted into the guide groove. A spring is connected between the second rod body and the bottom of the guide groove. The top end of the first protrusion is provided with a first slot that is adapted to the first rod body. The bottom end of the second protrusion is provided with a second slot that is adapted to the second rod body. The first rod body is inserted into the first slot, and the second rod body is inserted into the second slot. There is a gap between the top end of the second rod body and the top end of the second slot.

[0010] The beneficial effects of this utility model are as follows: By opening the first threaded hole and the second threaded hole with opposite spiral directions on the first nut and the second nut respectively, and connecting the first nut and the second nut with the connecting rod, the first nut cannot be loosened, thus ensuring the reliability of the nut.

[0011] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0012] Figure 1 This is the front view of the anti-loosening flange nut of this utility model.

[0013] In the diagram: 1-First nut, 2-Second nut, 3-Third nut, 4-Plug, 5-Connecting rod, 10-First threaded hole, 11-Flange, 15-First protrusion, 16-First slot, 20-Second threaded hole, 21-First through hole, 22-First elastic washer, 25-Second protrusion, 26-Second slot, 30-Third threaded hole, 31-Second through hole, 32-Second elastic washer, 35-Glue flow groove, 36-Glue guide ring groove, 40-Limiting head, 51-First rod body, 52-Second rod body, 53-Guide groove, 54-Spring. Detailed Implementation

[0014] See Figure 1This utility model of an anti-loosening flange nut includes a first nut 1, a second nut 2, a third nut 3, a first protrusion 15, a second protrusion 25, a connecting rod 5, a first through hole 21, a second through hole 31, an insert rod 4, and a glue flow groove 35. A flange 11 is fixed to the bottom of the first nut 1. The first nut 1 has a first threaded hole 10 inside, which penetrates the first nut 1 from top to bottom. A second nut 2 is located above the first nut 1, and a second threaded hole 20 inside, which penetrates the second nut 2 from top to bottom. The third nut 3 has an external thread that mates with the second threaded hole 20 and is screwed into the second threaded hole 20. The third nut 3 also has a third threaded hole 30 inside. A first elastic clamp is sandwiched between the first nut 1 and the second nut 2. Washer 22, a second elastic washer 32 is sandwiched between the first nut 1 and the third nut 3, the first threaded hole 10 and the third threaded hole 30 have the same thread, the thread of the first threaded hole 10 and the thread of the second threaded hole 20 have opposite helical directions, the second nut 2 has a first through hole 21 on its side wall, the third nut 3 has a second through hole 31 on its side wall, the first through hole 21 and the second through hole 31 are located on the same straight line, the insertion rod 4 passes through the first through hole 21 and is inserted into the middle of the second through hole 31, the inner wall of the third threaded hole 30 has a glue flow groove 35, the glue flow groove 35 is connected to the second through hole 31, the outer wall of the first nut 1 has a first protrusion 15, the outer wall of the second nut 2 has a plurality of second protrusions 25, the connecting rod 5 connects the first protrusion 15 and one of the second protrusions 25 on the second nut 2.

[0015] To prevent the adhesive from flowing back during injection, the first through hole 21 is inclined downwards, and the opening end of the first through hole 21 on the outer wall of the second nut 2 is higher than the opening end of the first through hole 21 on the inner wall of the second nut 2.

[0016] In order to facilitate the removal of the insertion rod 4, a limiting head 40 is provided at one end of the insertion rod 4. The limiting head 40 is located outside the second nut 2 and contacts the outer wall of the second nut 2. The first through hole 21 does not allow the limiting head 40 to be inserted.

[0017] In order to allow the adhesive to spread as much as possible, the adhesive flow channel 35 is set vertically, and the top of the adhesive flow channel 35 is connected to the second through hole 31. The inner wall of the third threaded hole 30 is provided with a plurality of adhesive guide ring grooves 36, which are connected to the adhesive flow channel 35.

[0018] The connecting rod 5 is composed of a first rod body 51 and a second rod body 52. ​​The top end of the first rod body 51 is provided with a guide groove 53 that is adapted to the second rod body 52. ​​The second rod body 52 is inserted into the guide groove 53. A spring 54 is connected between the second rod body 52 and the bottom of the guide groove 53. The top end of the first protrusion 15 is provided with a first slot 16 that is adapted to the first rod body 51. The bottom end of the second protrusion 25 is provided with a second slot 26 that is adapted to the second rod body 52. ​​The first rod body 51 is inserted into the first slot 16, and the second rod body 52 is inserted into the second slot 26. There is a gap between the top end of the second rod body 52 and the top end of the second slot 26.

[0019] The working process of this utility model: In operation, the anti-loosening flange nut of this utility model is made by screwing the first nut 1 onto the screw and tightening it, then placing the first elastic washer 22 and the second elastic washer 32 onto the first nut 1, and then screwing the second nut 2 onto the screw and tightening it. The position of the second nut 2 is adjusted so that one of the second protrusions 25 of the second nut 2 is directly above the first protrusion 15. The connecting rod 5 is compressed and inserted between the first protrusion 15 and the second protrusion 25. The connecting rod 5 is then loosened so that the lower end of the connecting rod is inserted into the first slot 16 and the upper end of the connecting rod is inserted into the second slot 26. Then the insertion rod 4 is pulled out, and the needle of the syringe containing glue is inserted through the first through hole 21 into the second through hole 31. Then the glue is slowly injected. The glue spreads under the guidance of the glue flow groove 25 and the glue guide ring groove 36 and gradually seeps into the gap between the third threaded hole 30 and the screw. The glue will stick the third nut 3 and the screw together. When the first nut 1 tends to rotate in the loosening direction, the first nut 1 will tend to move upward, while the second nut 2 will tend to rotate in the tightening direction and will tend to move downward. This will prevent the first nut 1 from moving upward, thus preventing the first nut 1 from rotating in the loosening direction and giving the first nut 1 excellent handling performance.

[0020] When the nut needs to be removed, first remove the connecting rod 5, then unscrew the second nut 2 from the third nut 3, use a syringe to inject solvent into the second through hole 31, the solvent will dissolve the glue after spreading, then unscrew the third nut 3, wipe off the glue and solvent adhering to the screw, and then unscrew the first nut 1.

[0021] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. Anti-loosening flange nut, characterized in that: The components include a first nut (1), a second nut (2), a third nut (3), a first protrusion (15), a second protrusion (25), a connecting rod (5), a first through hole (21), a second through hole (31), an insert rod (4), and a glue channel (35). The first nut (1) has a flange (11) fixed at its bottom. The first nut (1) has a first threaded hole (10) inside, which penetrates the first nut (1) from top to bottom. The second nut (2) is located above the first nut (1). The second nut (2) has a second threaded hole (20) inside, which penetrates the second nut (2) from top to bottom. The third nut (3) has an external thread that matches the second threaded hole (20) on its outside. The third nut (3) is screwed into the second threaded hole (20). The third nut (3) has a third threaded hole (30) inside. A first elastic washer (22) is sandwiched between the first nut (1) and the second nut (2). A second elastic washer (32) is sandwiched between the first nut (1) and the third nut (3). The first threaded hole (10) and the third threaded hole (30) have the same thread. The thread of the first threaded hole (10) and the thread of the second threaded hole (20) are in opposite directions. The second nut (2) has a first through hole (21) on its side wall and the third nut (3) has a second through hole (31) on its side wall. The first through hole (21) and the second through hole (31) are on the same straight line. The insertion rod (4) passes through the first through hole (21) and is inserted into the middle of the second through hole (31). The inner wall of the third threaded hole (30) has a glue flow groove (35) which is connected to the second through hole (31). The first nut (1) has a first protrusion (15) on its outer wall and the second nut (2) has several second protrusions (25) on its outer wall. The connecting rod (5) connects the first protrusion (15) to one of the second protrusions (25) on the second nut (2).

2. The anti-loosening flange nut as described in claim 1, characterized in that: The first through hole (21) is inclined downward, and the opening end of the first through hole (21) on the outer wall of the second nut (2) is higher than the opening end of the first through hole (21) on the inner wall of the second nut (2).

3. The anti-loosening flange nut as described in claim 1, characterized in that: One end of the insertion rod (4) is provided with a limiting head (40). The limiting head (40) is located outside the second nut (2). The limiting head (40) is in contact with the outer wall of the second nut (2). The first through hole (21) does not allow the limiting head (40) to be inserted.

4. The anti-loosening flange nut as described in claim 1, characterized in that: The glue flow groove (35) is vertically arranged, and the top of the glue flow groove (35) is connected to the second through hole (31). The inner wall of the third threaded hole (30) is provided with several glue guide ring grooves (36), which are connected to the glue flow groove (35).

5. The anti-loosening flange nut as described in claim 1, characterized in that: The connecting rod (5) is composed of a first rod body (51) and a second rod body (52). The top end of the first rod body (51) is provided with a guide groove (53) adapted to the second rod body (52). The second rod body (52) is inserted into the guide groove (53). A spring (54) is connected between the bottom of the second rod body (52) and the guide groove (53). The top end of the first protrusion (15) is provided with a first slot (16) adapted to the first rod body (51). The bottom end of the second protrusion (25) is provided with a second slot (26) adapted to the second rod body (52). The first rod body (51) is inserted into the first slot (16), and the second rod body (52) is inserted into the second slot (26). There is a gap between the top end of the second rod body (52) and the top end of the second slot (26).

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